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1 year ago

Squared root 50 x squared root 8 surds

Mathematics

1 answer:

frez [133]1 year ago

6 0

Answer:

Step-by-step explanation:

using the rule of radicals

$\sqrt{a}$ × $\sqrt{b}$ = $\sqrt{ab}$ , then

$\sqrt{50}$ × $\sqrt{8}$

= $\sqrt{50(8)}$

= $\sqrt{400}$

= 20

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Elina [12.6K]

Answer:

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Step-by-step explanation:

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this follows the pattern in the table

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3 years ago

The length of a swimming pool is 22ft. The width is 40ft.if the volume of the pool is 2,500 ft which equation below could be use

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3 years ago

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Neko [114]

Answer:

1/3

Step-by-step explanation:

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3 years ago

Work out the height of a parallelogram with base of 6cm and area of 27cm²

professor190 [17]

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3 years ago

What 2 numbers add to get 2 and multiply to 4

rusak2 [61]

Factor 4
4=1 times 4
2 times 2
they don't add to 2
set up equation
x+y=2
xy=4

first equation, subtract x from both sides
y=2-x
subsitute for y
x(2-x)=4
distribute
2x-x^2=4
add x^2
2x=x^2+4
subtract 2x
0=x^2-2x+4
use quadratic formula which is
if you have ax^2+bx+c=0 then
x= $\frac{ -b+/-\sqrt{b^{2}-4ac} }{2a}$ so

1x^2-2x+4=0
a=1
b=-2
c=4
x= $\frac{ -(-2)+/-\sqrt{(-2)^{2}-4(1)(4)} }{2(1)}$
x= $\frac{ 2+/-\sqrt{4-16} }{2}$
x= $\frac{ 2+/-\sqrt{-12} }{2}$
we have $\sqrt{-12}$ and that doesn't give a real solution
therefor there are no real solutions
but if you want to solve fully
x= $\frac{ 2+/-2\sqrt{-3} }{2}$
i= $\sqrt{-1}$
x= $\frac{ 2+/-2i\sqrt{3} }{2}$
x= $1+/-i\sqrt{3}$
x= $1-i\sqrt{3}$ or x= $1+i\sqrt{3}$ (those are the 2 numbers)

6 0

4 years ago